Electric water-heater.



the provision of a devlce of this character in' STATES PATENT FFICE. i

ancHnsALn s. cnirrn'or PITTSIELD, nsislcHUsE'rrs'assmNon 'ro GENERALELEcrnIc comm.- E, con'roaATIoN' 0E NEW vom;

ELEcraIc. rwaffEnfrrEirrEii. i

Spectcation orlettehri Patenti j .Applicationv led 1i-@Ember 10;"19'15;Serial No. 551,632. i

, 'C l 4 l 4 l i Patented Mar. 5, 1912.

a subject of the Kingof Great.Br itain,ire siding at. Pittsfield, countycfu-Berkshire, State of -Massachusetts, h ave invented certain new anduseful Improvements .in Electric Water-Heaters, of wliichthe followingis a specification. r

Y This invention relates to -electric fluid heaters and the like and hasfor its object -v which the Huid can'be brought lp to the desix-edtemperature 'quickly ande ciently.-Y

One of the objects of' nryinventio'n is to produce an electric Huidheater in which a relatively small portion of .the water is. heatedquickly while a larger portion is 'li-ated slowly. t

Another object of my invention is to produce an water which is heatedquickly-is regulated automatically and any .excess of heated water istransmitted tothe largerv body olf` water. y In carrymg out my inventionI provide a heating chamber and a storage chamber.

The two chambers are so connected 'that apassage between them 1sautomatically cotrolled by the temperature of the Water. In carryingthis into eiect in olie form, -a valve is provided between the twochambers and a thermostat is'provided for controlling the valve. Theparts areso arranged that when this valve is opened a circulation ofwater is established from one chamber to the other. I,also provide meanswhereby when the circulation does take place the colder water in thestorage chamber is caused' to flow into the heating chamber. ThisIaccomplish by having a pi e extending into the storage chamberwhic isprovided with means whereby it automatically adjusts its effectivelength to the height ,of the water.-

Other objects and purposes of my invention will appear in the course ofthe .following specification in which I have Vdisclosed my inventionembodied in concrete formV for purposes of illustration. l

In thel accompanyin drawmg embodying my invention in onel orm, Flgure 1represents a side elevation of my device, the casf' ing being "partlybroken away to disclose the i terior structure; and Fig2 is a detailview of the thermostat.

electric water heater of thisl character 1n which' the temperature ofthe' ,Referring to the drawings10 represcnhal rthe storage chamber and"l1 represents 'the heating chamber. The heating chamber l. Ahaveshownasbeing heat insulated.v4 'this' providing an inner casing`12' andanouter casing 13. The space between thesecasngs' may beA heat insulatedin anyi well-known' manner, as, for instance,"by evacuating thc ber Ihave provided a heating unit 14 which extends verticall upward. :Th-:terminals 15` of this heating unit are brought out through the base 16which is secured to the 1'( communicates with the interior of thefromvthis-chamber. The storagechamber l0 may be in 4any ing a cover 18.-This globeis secured to the topv of the heating chamber, being open atthebottom'so as to provide communication Vwith the lower chamber. 'Inorder to proarrauge a pipe 19, the upper end of which communicates 'withthe storage chamber whlle thebottom extends downward into 'the heat-ingchamber. A valve 2O is pro- 21 for operating this valve extends downthrough and beyond the end of the pipe.

element-.22 supported in any -desired man-A shown inFig. 2. Thisthermostatic element is so arranged that as the temperature varies itsend which engages the valve operating rod is moved upand down and orderto facilitate the, circulationbt'` the water from one chamber toanother, I4 pro# vide the circulating pipe 23. While the cir- -thestorage chamber. In order to bring this cool water down -into theheating chamber, the circulating pipe is madeextensible, this beingshown in the drawing by havmg the top of the upper section of the pipe Iprovide a oat 24 which will move up and dow-n the passage 25 in thecirculating-4 pipe at'v oi,`iear the top ofthe water.

lmay be done as, shown ir. the drawings by 6o space. In-th'e bottom ofthe heating cham- 65 bottom of the heating chamber. A faucet heatingchamber' for drawingoi the water desired'form, as, for instance, a globehav- 71'/ The end of this rod engages a thermostatic y ner not shown'which may 'be.. -shapd as 90 'thereby opens and closes the valve 20. In9 culatin is goingon between the t-wo chambers'the colder water willbe-at the top of '10C vide a'passage between the two chambers I 80:

.vided Vfor the top of this pipe and the rod $5 ipe made in telescopingsections. -At the 106 A with' the level of the water and thereby keep eThe operation ofV my device 'constructed -as above described isasfollows: Whe'nthe unit 14 fisheated the water in the chamber -ll willb'e corres ondingly heated, while the temperature' of-t e water intheupper tank will 'be unchanged.' When-,the .water in the f lower,chamber reachesa predetermined temperature the lvalve -20 will open andthe .v l lwater will circulate fromv the lower chamber -1o the. waterwhich leaves the lower chamber will be'displaced by water'from4 the topof,

vinto the upper chamber.- At the'same time the storage chamber. -In thisway the circulation is carried on until the temperature offthewater inthe lower chamber is reduced to the proper point. The water in the'upper chamber is therefore gradually raised in temperature, while thatin' the lower chamber is kept .at a substantially the lower chamber canbe drawn off at4 any constant temperature. The .hot water in timethrough the 'faucet 17.

While I have described my invention as embodied in concrete form forpurposes of L ningen-ion, it should be understood that I do -not limitmyinvention'thereto, since vaufious modifications thereof will suggest l.themselves 4to those skilled in the art'with- 7 out departing from-the,spirit'of mv inven- "i" tion, the scope of which isset foxth in the.annexed claims.

What' I claim as new and'desire to'secure l, by Letters Patent of theUnited States, isf-,-

l. A11 electric water heater comprising 'a heating `chamber, a storagechamber, a thermostat, and means controlled thereby -or' establishingcirculation between said ...'cha-mbers.

thermostatlocated in the heating chamber, 4

2. An electric water heater comprising a heating chamber, a storagechamber, a`

ing circulation between said chambers.

3. An electric water heater comprising v a heating chamber, a.,t storagechamber, a thermostat, and avalve between said chambers controlled bythe thermostat. f 4. An electric water heater comprising a heating.chamber, a storage chamber, a f-therx'nostat located in theA heatingchamber, and a-valve between said chambers, con# trolled by thethermostat.

'heating chamber, a; storage chamber, l a

ot er, and means whereby the effective length offsaid pige varies withthe height othe water in t e chamber-into which it extends. l

above said heating chamber,'a Eipe extending upward into said storage camber, and `e. float at? the upper end of said pipe for causing'the-e'ectlve len' h of lthe pipe to vary with the height o `'the water inthe storage chamber.- y

'-7. An electric water heater comprising a heatin chamber, astorage-chamber, means contro ed by the temperature of the water andymeans controlled :thereby for establish-v 6.l .A11 electric'waterlheaterlcomprisin 'a' heating` chamber, 'afstorage chamber loc ed/,

5: An electric water heater lcom'prisinga pi e extendingrom one chamberinto th'e for establishing Aa passage" between 'SaulV a

